ex 4
1. ✓
2.✓
3. I haven't had a cigarette for three weeks!
4. I've known Julia since we went to university.
5. I've lived here for ten years.
6. ✓
7. Have you been here for a long time ?
ex 5
1 already
2 just
3 for
4 yet
5 since
6 years ago
